title: A new fluorescent probe for distinguishing Zn2+ and Cd2+ with high sensitivity and selectivity.
abstract: A new fluorescence probe for distinguishing Zn(2+) and Cd(2+) is designed and synthesized. For the first time to our knowledge, this probe can recognize similar metal ions by coherently utilizing intramolecular charge transfer (ICT) and different electronic affinities of various metal ions, instead of by selective coordination alone, which may be interfered with and lose its selectivity easily in a complicated environment, providing a distinct recognition even by the naked eye for Zn(2+) and Cd(2+) with the sensitivity at the ppb level. This design strategy may initiate a straightforward approach for the selective detection of various metal ions with similar chemical properties in extensive applications such as environmental, industrial, and bio-science.
authors.affiliation: State Key Laboratory of Silicon Materials, Cyrus Tang Center for Sensor Materials and Applications, Department of Materials Science and Engineering, Zhejiang University, Hangzhou, P R China.
authors.forename: Yiqun
authors.initials: Y
authors.lastname: Tan
authors.forename: Junkuo
authors.initials: J
authors.lastname: Gao
authors.forename: Jiancan
authors.initials: J
authors.lastname: Yu
authors.forename: Ziqi
authors.initials: Z
authors.lastname: Wang
authors.forename: Yuanjing
authors.initials: Y
authors.lastname: Cui
authors.forename: Yu
authors.initials: Y
authors.lastname: Yang
authors.forename: Guodong
authors.initials: G
authors.lastname: Qian
mesh_terms: D002104:Cadmium / Q000032:analysis* / Q000737:chemistry*; D002623:Chemistry Techniques, Analytical / Q000295:instrumentation*; D015195:Drug Design; D005456:Fluorescent Dyes / Q000737:chemistry*; D008958:Models, Molecular; D008968:Molecular Conformation; D013050:Spectrometry, Fluorescence; D013844:Thiazoles / Q000737:chemistry*; D015032:Zinc / Q000032:analysis* / Q000737:chemistry*
chemical_list: D005456:Fluorescent Dyes; D013844:Thiazoles; D002104:Cadmium; D015032:Zinc